<script lang="ts" setup>
  import type { Ref } from 'vue'
  import { computed, nextTick, onMounted, reactive, ref, unref, useAttrs, watch } from 'vue'
  import { type FormProps as AntFormProps, Form, Row } from 'ant-design-vue'
  import { useDebounceFn } from '@vueuse/core'
  import { cloneDeep } from 'lodash-es'
  import type { FormActionType, FormProps, FormSchemaInner as FormSchema } from './types/form'
  import type { AdvanceState } from './types/hooks'

  import FormItem from './components/FormItem.vue'
  import FormAction from './components/FormAction.vue'

  import { dateItemType } from './helper'

  import { useFormValues } from './hooks/useFormValues'
  import useAdvanced from './hooks/useAdvanced'
  import { useFormEvents } from './hooks/useFormEvents'
  import { createFormContext } from './hooks/useFormContext'
  import { useAutoFocus } from './hooks/useAutoFocus'
  import { basicProps } from './props'
  import { useModalContext } from '/@/components/Modal'

  import { deepMerge } from '/@/utils'
  import { dateUtil } from '/@/utils/dateUtil'
  import { useDesign } from '/@/hooks/web/useDesign'

  defineOptions({ name: 'BasicForm' })

  const props = defineProps(basicProps)
  const emit = defineEmits(['advanced-change', 'reset', 'submit', 'register', 'field-value-change'])
  const attrs = useAttrs()
  const formModel = reactive({})
  const modalFn = useModalContext()

  const advanceState = reactive<AdvanceState>({
    isAdvanced: true,
    hideAdvanceBtn: false,
    isLoad: false,
    actionSpan: 6,
  })

  const defaultValueRef = ref({})
  const isInitedDefaultRef = ref(false)
  const propsRef = ref<Partial<FormProps>>()
  const schemaRef = ref<FormSchema[] | null>(null)
  const formElRef = ref<FormActionType | null>(null)

  const { prefixCls } = useDesign('basic-form')

  // Get the basic configuration of the form
  const getProps = computed(() => {
    return { ...props, ...unref(propsRef) } as FormProps
  })

  const getFormClass = computed(() => {
    return [
      prefixCls,
      {
        [`${prefixCls}--compact`]: unref(getProps).compact,
      },
    ]
  })

  // Get uniform row style and Row configuration for the entire form
  const getRow = computed(() => {
    const { baseRowStyle = {}, rowProps } = unref(getProps)
    return {
      style: baseRowStyle,
      ...rowProps,
    }
  })

  const getBindValue = computed(() => ({ ...attrs, ...props, ...unref(getProps) } as AntFormProps))

  const getSchema = computed((): FormSchema[] => {
    const schemas: FormSchema[] = unref(schemaRef) || (unref(getProps).schemas as any)
    for (const schema of schemas) {
      const { defaultValue, component, componentProps, isHandleDateDefaultValue = true } = schema

      const valueFormat = componentProps ? componentProps.valueFormat : null
      // handle date type
      if (
        isHandleDateDefaultValue &&
        defaultValue &&
        component &&
        dateItemType.includes(component)
      ) {
        if (!Array.isArray(defaultValue)) {
          schema.defaultValue = valueFormat
            ? dateUtil(defaultValue).format(valueFormat)
            : dateUtil(defaultValue)
        } else {
          const def: any[] = []
          defaultValue.forEach((item) => {
            def.push(valueFormat ? dateUtil(item).format(valueFormat) : dateUtil(item))
          })
          schema.defaultValue = def
        }
      }
    }
    if (unref(getProps).showAdvancedButton) {
      return cloneDeep(schemas.filter((schema) => schema.component !== 'Divider') as FormSchema[])
    } else {
      return cloneDeep(schemas as FormSchema[])
    }
  })

  const { handleToggleAdvanced, fieldsIsAdvancedMap } = useAdvanced({
    advanceState,
    emit,
    getProps,
    getSchema,
    formModel,
    defaultValueRef,
  })

  const { handleFormValues, initDefault } = useFormValues({
    getProps,
    defaultValueRef,
    getSchema,
    formModel,
  })

  useAutoFocus({
    getSchema,
    getProps,
    isInitedDefault: isInitedDefaultRef,
    formElRef: formElRef as Ref<FormActionType>,
  })

  const {
    handleSubmit,
    setFieldsValue,
    clearValidate,
    validate,
    validateFields,
    getFieldsValue,
    updateSchema,
    resetSchema,
    appendSchemaByField,
    removeSchemaByField,
    resetFields,
    scrollToField,
  } = useFormEvents({
    emit,
    getProps,
    formModel,
    getSchema,
    defaultValueRef,
    formElRef: formElRef as Ref<FormActionType>,
    schemaRef: schemaRef as Ref<FormSchema[]>,
    handleFormValues,
  })

  createFormContext({
    resetAction: resetFields,
    submitAction: handleSubmit,
  })

  watch(
    () => unref(getProps).model,
    () => {
      const { model } = unref(getProps)
      if (!model) return
      setFieldsValue(model)
    },
    {
      immediate: true,
    },
  )

  watch(
    () => unref(getProps).schemas,
    (schemas) => {
      resetSchema(schemas ?? [])
    },
  )

  watch(
    () => getSchema.value,
    (schema) => {
      nextTick(() => {
        //  Solve the problem of modal adaptive height calculation when the form is placed in the modal
        modalFn?.redoModalHeight?.()
      })
      if (unref(isInitedDefaultRef)) return

      if (schema?.length) {
        initDefault()
        isInitedDefaultRef.value = true
      }
    },
  )

  watch(
    () => formModel,
    useDebounceFn(() => {
      unref(getProps).submitOnChange && handleSubmit()
    }, 300),
    { deep: true },
  )

  async function setProps(formProps: Partial<FormProps>): Promise<void> {
    propsRef.value = deepMerge(unref(propsRef) || {}, formProps)
  }

  function setFormModel(key: string, value: any, schema: FormSchema) {
    formModel[key] = value
    emit('field-value-change', key, value)
    // TODO 优化验证，这里如果是autoLink=false手动关联的情况下才会再次触发此函数
    if (schema && schema.itemProps && !schema.itemProps.autoLink)
      validateFields([key]).catch((_) => {})
  }

  function handleEnterPress(e: KeyboardEvent) {
    const { autoSubmitOnEnter } = unref(getProps)
    if (!autoSubmitOnEnter) return
    if (e.key === 'Enter' && e.target && e.target instanceof HTMLElement) {
      const target: HTMLElement = e.target as HTMLElement
      if (target && target.tagName && target.tagName.toUpperCase() === 'INPUT') handleSubmit()
    }
  }

  const formActionType: Partial<FormActionType> = {
    getFieldsValue,
    setFieldsValue,
    resetFields,
    updateSchema,
    resetSchema,
    setProps,
    removeSchemaByField,
    appendSchemaByField,
    clearValidate,
    validateFields,
    validate,
    submit: handleSubmit,
    scrollToField,
  }

  onMounted(() => {
    initDefault()
    emit('register', formActionType)
  })

  const getFormActionBindProps = computed(
    () => ({ ...getProps.value, ...advanceState } as InstanceType<typeof FormAction>['$props']),
  )
</script>

<template>
  <Form
    v-bind="getBindValue"
    ref="formElRef"
    :class="getFormClass"
    :model="formModel"
    @keypress.enter="handleEnterPress"
  >
    <Row v-bind="getRow">
      <slot name="formHeader"></slot>
      <template v-for="schema in getSchema" :key="schema.field">
        <FormItem
          :is-advanced="fieldsIsAdvancedMap[schema.field]"
          :table-action="tableAction"
          :form-action-type="formActionType"
          :schema="schema"
          :form-props="getProps"
          :all-default-values="defaultValueRef"
          :form-model="formModel"
          :set-form-model="setFormModel"
        >
          <template v-for="item in Object.keys($slots)" #[item]="data">
            <slot :name="item" v-bind="data || {}"></slot>
          </template>
        </FormItem>
      </template>

      <FormAction v-bind="getFormActionBindProps" @toggle-advanced="handleToggleAdvanced">
        <template
          v-for="item in ['resetBefore', 'submitBefore', 'advanceBefore', 'advanceAfter']"
          #[item]="data"
        >
          <slot :name="item" v-bind="data || {}"></slot>
        </template>
      </FormAction>
      <slot name="formFooter"></slot>
    </Row>
  </Form>
</template>

<style lang="less">
  @prefix-cls: ~'@{namespace}-basic-form';

  .@{prefix-cls} {
    .ant-form-item {
      &-label label::after {
        margin: 0 6px 0 2px;
      }

      &-with-help {
        margin-bottom: 0;
      }

      &:not(.ant-form-item-with-help) {
        margin-bottom: 20px;
      }

      &.suffix-item {
        .ant-form-item-children {
          display: flex;
        }

        .ant-form-item-control {
          margin-top: 4px;
        }

        .suffix {
          display: inline-flex;
          align-items: center;
          padding-left: 6px;
          margin-top: 1px;
          line-height: 1;
        }
      }
    }

    .ant-form-explain {
      font-size: 14px;
    }

    &--compact {
      .ant-form-item {
        margin-bottom: 8px !important;
      }
    }
  }
</style>
